get a humidifier going! they work wonders (: And zarbees Naturals cough syrup works great too, it's for infants 2 months +... that's all I ever needed for my son plus the nose sucker.
My son just got over being congested.. I kept my son dressed really warm at all times, I would prop him up when sleeping, I used my breast milk put a few drops in his nose waited about 30-60 secs then put him on his tummy after I used the booger suction thing I also bought a humidifier and that helped so much .. Hope that helps and hope your little one gets better